That song was performed by 38 Special. It can be found on the album
Rock and Roll Strategy from 1988, or the
38 Special Anthology, released in 2001. I'm sure neither of these albums is hard to find.
Dennis Brown appears to have recorded it on an album called
Strictly the Best - Volume 10. You can buy it here:
http://half.ebay.com/cat/buy/prod.cgi?cpid=1801750&domain_id=1876&meta_id=2
or also here:
http://www.amazon.com/exec/obidos/tg/det...nce&s=music
Also, if you search for "Dennis Brown" "Second Chance" (both phrases in quotes) on Google, you will find some places you may be able to buy the MP3, if you aren't interested in the entire album.
Edited to add: Er, yeah. What Rogue said.